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US 7,094,730 B2Granted
Gas treatment device, methods for making and using the same, and a vehicle exhaust system
AssigneeDelphi Technologies, Inc.
InventorsWilliam J. LaBarge, Joachim Kupe, Conrad Anderson
Life of this patent
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Abstract
Gas treatment devices and vehicle exhaust systems are disclosed herein. In one embodiment, the vehicle exhaust system, comprises: an engine, a gas treatment device disposed downstream from the engine, the gas treatment device comprising a housing, a substrate disposed within the housing, the substrate comprising a catalyst and a hexaaluminate comprising a catalyst stabilizer disposed in a hexaaluminate crystal structure.
Claims10
A gas treatment device, comprising:
- a housing;
- a substrate disposed within the housing, the substrate comprising a coating comprising
- a catalyst selected from the group consisting of platinum, palladium, rhodium, ruthenium, iridium, gold, silver, and combinations comprising at least one of these catalysts,
- a hexaaluminate comprising a crystal stabilizer disposed in a hexaaluminate crystalline structure, said crystal stabilizer being selected from the group consisting of barium, lanthanum, strontium, ruthenium, and combinations comprising at least one of the foregoing crystal stabilizers;
- and
- a catalyst stabilizer selected from the group consisting of calcium-zirconium oxide, cesium-zirconium oxide, barium-zirconium oxide, and combinations comprising at least one of the foregoing catalyst stabilizers.
3 more elements
A gas treatment device, comprising:
- a housing;
- a metal foil disposed within the housing and comprising a coating, and
- a retention material disposed between the housing and the substrate;
- wherein the coating comprises
- a catalyst selected from the group consisting of platinum, palladium, rhodium, ruthenium, iridium, gold, silver, and combinations comprising at least one of these catalysts;
- a hexaaluminate comprising a crystal stabilizer disposed in a hexaaluminate crystalline structure, said crystal stabilizer being selected from the group consisting of barium, lanthanum, strontium, ruthenium, and combinations comprising at least one of the foregoing crystal stabilizers;
- and
- a catalyst stabilizer selected from the group consisting of calcium-zirconium oxide, cesium-zirconium oxide, barium-zirconium oxide, and combinations comprising at least one of the foregoing catalyst stabilizers.
5 more elements
A vehicle exhaust system, comprising:
- an engine;
- a gas treatment device disposed downstream from the engine, the gas treatment device comprising a housing, a substrate disposed within the housing, the substrate comprising a coating comprising
- a catalyst selected from the group consisting of platinum, palladium, rhodium, ruthenium, iridium, gold, silver, and combinations comprising at least one of these catalysts:
- a hexaaluminate comprising a crystal stabilizer disposed in a hexaaluminate crystalline structure, said crystal stabilizer being selected from the group consisting of barium, lanthanum, strontium, ruthenium, and combinations comprising at least one of the foregoing crystal stabilizers;
- and
- a catalyst stabilizer selected from the group consisting of calcium-zirconium oxide, cesium-zirconium oxide, barium-zirconium oxide, and combinations comprising at least one of the foregoing catalyst stabilizers.
3 more elements
Dependencies are inferred from the claim text.